Thomas j



(No Model.) T J FEED WATER HEATER.

N0. 304,029. Patented Aug. 26, 1884.

UNITED STATES PATENT OFFICE.

THOMAS J. PYNE, OF SAN FRANCISCO, CALIFORNIA.

FEED-WATER HEATER.

SPECIFICATION forming part of Letters Patent No. 304,029, dated August26, 1884:.

Application filed October 2, 1883.

To all whom it may concern.-

Beitknown that I, THOMAS J. Pvnn, a citizen of the United States,residing in San Francisco, county of San Francisco, State of California,have made and invented certain new and useful Improvements in Feed-WaterHeaters for Steam-Boilers, of which the following is a full, clear, andexact description, reference being bad to the accompanying drawilyinvention relates to an apparatus for heating and feeding water tosteam-boilers; and it consists in a certain novel construction,combination, and arrangement of parts constituting and producing anapparatus where by feed-water is raised to a high temperature beforebeing introduced into the circulation of the boiler, and is sointroduced and fed without the use of a feed or a circulating pump.

The following description fully explains the nature of my said inventionand the manner in which I proceed to construct, apply, use, and carryout the same, the accompanying drawing being referred to by figures andletters.

A represents a steam boiler of any wellknown construction, of which A isthe water space, A the steam-space, and A the smoke box or chamberconnected with the chimney.

B is a water tank or reservoir located conveniently near the boiler. Apipe, 0, connects it with a suitable source of supply, either with orwithout a head or pressure. This pipe is controlled by a stop-cock or acheckvalve. From some point on the lower part of the tank a small pipe,cl, is led into the smoke-box of the boiler. In this space it is carriedaround in several coils or layers to form a heating-coil, D, and thenpassing out through the side of the shell it connects with a verticalfeed-pipe, E, outside of the boiler. This latter pipe leads into thelower part of the water-space A. A cheek-valve, e, permits flow of waterin a downward direction only. From the steam-space A of the boiler 21.steam-pipe, I runs upward to the watertank, where it is carried in atthe top. It has a shut-off cock, 9, to control the flow and (No model.)

pressure of steam in the watertank. A coldwater supply-pipe, H, providedwith a shutoff cock, h, leads into the upper part of the water-space inthe boiler from a point in the pipe between the tank and theheater-coil. The watentank is provided with a weighted relief-valve, K,to prevent excessive pressure. Now, as thus arranged, the operation ofthe apparatus is as follows: The tank having a supply of water, thefeedpipe d fills the coilheater. In its passage through this pipe thetemperature of the water is raised, so that, passing down through thepipe IE, it enters the boiler as hot water. The cock E regulates thefeed through this pipe, and the checkvalve e prevents back flow.Necessary pressure for circulation and flow of water from the tankagainst the pressure of the boiler-water is obtained by means of theequalizing-pipe F, through which the steam-pressure in the boiler isapplied upon the water in the tank. When it is desired to take waterinto the boiler at normal temperature, the cold-water feed-pipe d isused. To refill the tank B, the cock g in the equalizing-pipe F is shut,and the steam then in the tank being allowed to condense, the waterrises in the pipe C, and, flowing past the check-valve f, fills thetank. In such manner feed-water is obtained at a high temperature, andis supplied to the boiler without the intervention of a feed-pump.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, isp In a feed-water heater, thecombination of the water-tank B and boiler A, discharge-pipe (1, havingthe coil D in top of the boiler, and supply-pipe E, connecting the coilwith the boiler A, in combination with the equalizingpipe F, connectingthe steam-space of the boiler with the tank 13 above the water-line,substantially as set forth.

Witness my hand and seal this 19th day of July, A. D. 1883.

THOMAS J. PYNE. [n s] \Vitnesses:

G. VI. EMERSON, GEO. A. Bronson.

